even though it would have been nice for you to look here first http://www.xbox-scene.com/versions.php since it is a lauch date box it will be a ver 1.0the version of your xbox mainly determines what chips you can use with it (every chip will work with a ver 1.0) and in the case of the older bios what hacked bios will work with it (these days current hacked bios will work with all version xbox's)